Spin-Orbit Coupling in n-Type PbTe/PbEuTe Quantum Wells

• Authors: M. Peres , V. Chitta , D. Maude , N. Oliveira , P. Rappl , A. Ueta , E. Abramof
• Languages of publication: EN

Abstracts

EN

Magnetoresistance measurements were performed on an n-type PbTe/PbEuTe quantum well and weak antilocalization effects were observed. This indicates the presence of spin-orbit coupling phenomena and we showed that the Rashba effect is the main mechanism responsible for this spin-orbit coupling. Using the model developed by Iordanskii et al., we fitted the experimental curves and obtained the inelastic and spin-orbit scattering times. Thus we could compare the zero field energy spin-splitting predicted by the Rashba theory with the energy spin-splitting obtained from the analysis of the experimental curves. The final result confirms the theoretical prediction of strong Rashba effect on IV-VI based quantum wells.

Keywords

EN

72.10.-d; 72.25.Rb; 73.20.Fz; 73.63.Hs

Discipline

• 72.25.Rb: Spin relaxation and scattering
• 73.63.Hs: Quantum wells
• 72.10.-d: Theory of electronic transport; scattering mechanisms
• 73.20.Fz: Weak or Anderson localization

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2011
• Volume: 119
• Issue: 5
• Pages: 602-605

Dates

published

2011-05

Contributors

author

M. Peres

• Instituto de Ciências Exatas, Departamento de Física e Química, Universidade Federal de Itajubá, Itajubá, PB 50, 37500-903, MG, Brazil

author

V. Chitta

• Instituto de Física, Universidade de São Paulo, PB 66318, 05315-970 São Paulo, SP, Brazil

author

D. Maude

• Grenoble High Magnetic Field Laboratory, CNRS, BP 166, 38042 Grenoble Cedex 9, France

author

N. Oliveira

• Instituto de Física, Universidade de São Paulo, PB 66318, 05315-970 São Paulo, SP, Brazil

author

P. Rappl

• Laboratório Associado de Sensores e Materiais, Instituto Nacional de Pesquisas Espaciais, PB 515, 12201-970 São José dos Campos, SP, Brazil

author

A. Ueta

• Laboratório Associado de Sensores e Materiais, Instituto Nacional de Pesquisas Espaciais, PB 515, 12201-970 São José dos Campos, SP, Brazil

author

E. Abramof

• Laboratório Associado de Sensores e Materiais, Instituto Nacional de Pesquisas Espaciais, PB 515, 12201-970 São José dos Campos, SP, Brazil

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Identifiers

DOI

10.12693/APhysPolA.119.602